| From: | Oliver Ford <ojford(at)gmail(dot)com> |
|---|---|
| To: | Tatsuo Ishii <ishii(at)postgresql(dot)org> |
| Cc: | krasiyan(at)gmail(dot)com, tgl(at)sss(dot)pgh(dot)pa(dot)us, vik(at)postgresfriends(dot)org, pgsql-hackers(at)postgresql(dot)org, andrew(at)tao11(dot)riddles(dot)org(dot)uk, david(at)fetter(dot)org |
| Subject: | Re: Add RESPECT/IGNORE NULLS and FROM FIRST/LAST options |
| Date: | 2025-01-24 08:27:09 |
| Message-ID: | CAGMVOdsEcL8kVhP_gz5qAEDuBaH8ypqmF8do2shENjC+_38yfg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Jan 23, 2025 at 6:27 AM Tatsuo Ishii <ishii(at)postgresql(dot)org> wrote:
>
> Another possible problem is, probably the code does not work well if
> there are multiple partitions. Since win_nonnulls stores currentpos in
> a partition, when the partition ends, win_nonnulls needs to be
> reset. Otherwise, it mistakenly represents currentpos in the previous
> partition.
>
The attached patch should fix both of these. I've added extra tests
with a PARTITION BY in the window clause to test for multiple
partitions.
| Attachment | Content-Type | Size |
|---|---|---|
| 0005-ignore-nulls.patch | application/octet-stream | 49.0 KB |
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